Officers observed Corey Johnson moving between multiple cars, NYPD said.
Shawn Howard of the Bronx attacked three people on the A and C trains, police said.
The man was taken to Kings County Hospital in serious but non-life threatening condition.
The 1, 2, 3, 5, 6, 7, A, C, D, E, F and 42nd Street Shuttle will all be affected.
MTA is modifying service on 1, 2, 4, 6, A, C, D, E, L, N and R over the weekend, so plan accordingly.
Trains along several subway lines were disrupted because of a power outage, officials said.
The 4, 5, 6, 7, A, C, E, Q and the 42nd Street shuttle will be disrupted this weekend.
The 4, 5, 6, 7, A, C, D, E, F, L, Q and Times Square Shuttle are all affected.
The 4, 5, 6, 7, A, C, E, F, N, Q and R lines are slated for service changes.
The 2, 3, 4, 5, 6, 7, A, C, D, E, F, Q and 42nd Street Shuttle will all be disrupted.
The Riders Alliance is asking for greater frequency and better communication on the Eighth Avenue line.
The 2, 3, 4, 5, 6, 7, A, C, D, F, J, M, N, Q lines and the 42nd Street shuttle will all be disrupted.
Smoke filled the 181st A and C train stations after a transformer malfunction on Friday afternoon.
The 1, 2, 3, 4, 5, 6, 7, A, C, E, D, F, G, N, Q, R and Franklin Avenue Shuttle will all be affected.
The 2, 3, 4, 5, 6, 7, A, C, D, E, F, N, Q, Times Square Shuttle and Staten Island Railway are affected.
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